Iranian Journal of Dermatology

Vol. 21, No. 85, Autumn 2018
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Treatment of lentigines by a novel high power diode laser at 755 nm: a case report
Gabriel Buendia Bordera, Jorge Gaviria Parada, Maribel Marti Giménez, Maria de los Llanos Pérez, Jiuia Oliva Morell, Gregorio Viera Marmol

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Date Received: 2018 / Jul / 06 Date Revised: 2018 / Jul / 16 Date Accepted: 2018 / Aug / 20

The use of high-power diode laser with a wavelength of 755 nm is an effective and safe method for the correction and partial and/or total elimination of pigmented lesions, specifically solar lentigines. This wavelength has yet not been used in diode lasers to treat solar lentigines. Side effects are the usual ones, including darkening and scab formation.
Our patient was a 40-year-old woman of Caucasian origin and IV Fitzpatrick phototype, who presented with solar lentigines of different sizes and clear edges. The applied treatment was a high-power diode laser of 755 nanometer (nm), 21 millisecond (ms) long pulse and 25 J/cm2 fluence. Initially, the darkening of the lesion occurred, followed by the appearance of a scab, which remitted 10 days after.
The use of high-power diode laser of single pulse at 755nm, 25J/ cm2 and 21ms, proved effective and safe concerning the removal of benign pigmented lesions.

Keywords: lentigo, hyperpigmentation, high-power diode laser

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